1. Date of download: 11/12/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Extent of Lesions in Idiopathic Sudden Hearing Loss With VertigoStudy Using Click and Galvanic Vestibular Evoked Myogenic Potentials Arch Otolaryngol Head Neck Surg. 2005;131(10):857-862. doi:10.1001/archotol.131.10.857 A representative case of the cochlea and otolith (saccule) type of vestibular dysfunction (patient 6). A, Pure-tone audiogram showing high-tone hearing loss in the left ear (L). R indicates right ear. B, Vestibular evoked myogenic potentials evoked by clicks (click- VEMP) showing an absence of response on the left side. C, Vestibular evoked myogenic potentials evoked by galvanic stimulation (galvanic-VEMP) showing normal responses on both sides. Results of caloric tests demonstrated normal responses in both ears (canal paresis, 8.3% on the left side). The first positive-negative peaks (p13-n23 for click-VEMP and p13g-n23g for galvanic-VEMP) are shown. Downward arrow indicates off the scale. Figure Legend:

2. Date of download: 11/12/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Extent of Lesions in Idiopathic Sudden Hearing Loss With VertigoStudy Using Click and Galvanic Vestibular Evoked Myogenic Potentials Arch Otolaryngol Head Neck Surg. 2005;131(10):857-862. doi:10.1001/archotol.131.10.857 A representative case of the cochlea, otolith (saccule), and (lateral) semicircular canal type of vestibular dysfunction (patient 14). A, Pure-tone audiogram showing profound hearing loss in the right ear (R). L indicates left ear. B, Vestibular evoked myogenic potentials evoked by clicks (click-VEMP) showing an absence of response on the right side. C, Vestibular evoked myogenic potentials evoked by galvanic stimulation (galvanic-VEMP) showing normal responses on both sides. Results of caloric tests showed no responses in the right ear (canal paresis, 100%). The first positive-negative peaks (p13-n23 for click-VEMP and p13g- n23g for galvanic-VEMP) are shown. Downward arrow indicates off the scale. Figure Legend:

3. Date of download: 11/12/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Extent of Lesions in Idiopathic Sudden Hearing Loss With VertigoStudy Using Click and Galvanic Vestibular Evoked Myogenic Potentials Arch Otolaryngol Head Neck Surg. 2005;131(10):857-862. doi:10.1001/archotol.131.10.857 Proportions of the 4 types of vestibular dysfunction in 22 patients with idiopathic sudden hearing loss. C type indicates cochlea type; C + O type, cochlea and otolith (saccule) type; C + S type, cochlea and (lateral) semicircular canal type; and C + O + S type, cochlea, otolith (saccule), and (lateral) semicircular canal type. Figure Legend:

4. Date of download: 11/12/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Extent of Lesions in Idiopathic Sudden Hearing Loss With VertigoStudy Using Click and Galvanic Vestibular Evoked Myogenic Potentials Arch Otolaryngol Head Neck Surg. 2005;131(10):857-862. doi:10.1001/archotol.131.10.857 Hearing recovery related to types of vestibular dysfunction in 22 patients. The types of dysfunction are explained in the legend to Figure 3. Figure Legend: